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Hi, i want to communicate multiple PIC16F877a. One is sort of a master and the rest are slaves. I am using CCS version 4.084 with MPLAB ICD2 debugger. Sorry for the long code.

Here is the code of t ...

Hi sir.
You are right. We are injecting (asynchronously) serial characters onto zero crossings of a power line (sort of a timed transmission data communication) which somehow lessen noise during tran ...

Hi.

I am sort of a newbie in this thing and I am looking for any help on putc/puts characters during zero crossing. I am using PIC16F877A.

I want to send:

for (Ctr1=0;Ctr1<=7;Ctr1++& ...

Hi, FvM. thanks for replying . You are right. we are currently developing a signal conditioning circuit (optoisolator, amplifiers) between xr2206 and line interface.

But I'm much more concerned wit ...

Hi, thank you guys for your quick reply.

Sorry, I forgot to tell you the detail that we'll be communicating over powerline, we are "tasked" to use VEPC-2 as an line coupling interface(L ...

hi, i'm interested building a FSK modem around a PIC microcontroller (PIC16F877A to be exact). we had XR2206/XR2211 as mod/demod, and zero a crossing detector. The modem will be used to communicate w ...

if each slave has his own address and have int_RDA enabled can use rs232 when all on the same wire. the addressed will answer.
with max485 (or others) you can enable/disable each one, separate wires. ...